Shandong Shengyue Technology Development Co.,Ltd is one of the most professional d12 engine parts piston vg1246030001 manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
Genuine quality Sinotruk Howo Truck D12 engine parts piston VG1246030001, used for Sinotruk HOWO A7 truck diesel engine parts.
FUNCTION
1. Bearing combustion pressure and converting energy: The piston is the core moving component in the diesel engine's combustion chamber. It primarily bears the immense high pressure generated by the combustion explosion of diesel fuel in the cylinder, transmitting the gas pressure to the connecting rod via the piston pin, driving the crankshaft to rotate and output mechanical work.
2. Completing the four-stroke working cycle: In a four-stroke diesel engine, the piston, driven by the connecting rod, completes the three auxiliary strokes: intake, compression, power, and exhaust, ensuring continuous engine operation.
3. Sealing the combustion chamber: Working in conjunction with the cylinder liner and piston rings, it forms a hermetically tight seal, preventing high-pressure gas leakage into the crankcase, maximizing compression ratio and combustion efficiency, and avoiding power loss, oil burning, or black smoke.
4. Heat transfer and cooling: The piston top directly contacts the high-temperature combustion gases. Heat is transferred away through the piston rings, cylinder wall, and oil splash/cooling passages, preventing the piston from overheating and melting or seizing.
5. Guiding reciprocating motion: The piston skirt, working in conjunction with the cylinder liner, bears lateral forces, maintaining the piston's stable linear reciprocating motion within the cylinder, reducing abnormal wear such as knocking and scoring.
Advantages
| No. | Category | Key Advantages |
|---|---|---|
| 1 | Strength & Durability | High-silicon aluminum alloy (or steel upgrade), withstands >2000°C peak temp & 15–20 MPa pressure, anti-fatigue/wear, graphite/tin coated skirt, 300,000–500,000+ km life under normal use, optimized for heavy-duty conditions. |
| 2 | Heat Conduction & Cooling | Excellent thermal conductivity, rapid heat dissipation via rings/cylinder/oil, bowl-shaped chamber for better combustion & lower thermal load. |
| 3 | Sealing & Compression | Precise fit with rings & liner, minimal blow-by, maintains 16:1–18:1 ratio, stable 25–35 bar pressure, lower fuel use & emissions (meets Euro II–IV). |
| 4 | Power & Fuel Economy | Balanced weight & size reduce vibration/noise, supports 380–460 hp output, strong torque & load capacity, optimized design for better fuel efficiency. |
| 5 | Reliability & Compatibility | Tight OEM tolerances, consistent cylinder pressure, wide fit for HOWO/A7/Sitrak etc., easy aftermarket availability, proven user feedback on power recovery & reduced issues. |
DETAILS
| DESCRIPTION | piston | PART NUMBER | VG1246030001 |
| WEIGHT |
2KG |
VOLUME |
L=130MM D=140MM |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Related components
Piston pin: VG1246030002
Piston pin retainer/circlip: VG1246030003
Piston ring assembly
Replacement Timing: During engine overhaul (usually 300,000-500,000 km or when there is insufficient cylinder pressure, oil burning, abnormal noise, or power loss). Piston wear/erosion is a common item in heavy truck overhauls.
Replacement Points: Must be replaced in groups (6 at a time), with new cylinder liners, piston rings, piston pins, connecting rod bearings, etc.
Professional equipment is required for cylinder boring and honing to ensure cylinder diameter tolerances and piston skirt clearances.
Post-replacement break-in: Run under low load for 1000-2000 km, avoiding rapid acceleration.
We also offer HOWO, HOWO A7, Golden Prince, Sitrak, T5G,T7H,D7B,D5B truck engine parts.
Connecting rod161500030008
Connecting rod cover161500030022
Connecting rod bushVG1500030077
Connecting rod bolt VG1500030023
Connecting rod bearingVG1560037034
Connecting rod bearingVG1540030015
Connecting rod bearingVG1560037033
Connecting rod bearingVG1540030016
Piston pinVG1560030013
Piston pin retaining ringVG1560030012
Piston VG1560037011
PistonVG1560030010
PistonVG1560030004
Conical ringVG1540030006
Double ladder ringVG1540030007
Spiral spring oil ring VG1560030045
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